yep. if you shop around(check out the classifieds, craigslist, and even ebay), the upgrade should cost you this:
Wagon rotors:$50-57
Wagon calipers/brackets:$60/ea.(might be able to find a jy or someone parting out a wagon. PM ncoutlaw. he's parting out a wagon. get him now while you can.)
pads:$35-40
rear disc brakes-
whole swap(rear hubs and all):$75-$100 from a private seller or jy
rotors:$50 for both
pads: $35-40
Wagon rotors:$50-57
Wagon calipers/brackets:$60/ea.(might be able to find a jy or someone parting out a wagon. PM ncoutlaw. he's parting out a wagon. get him now while you can.)
pads:$35-40
rear disc brakes-
whole swap(rear hubs and all):$75-$100 from a private seller or jy
rotors:$50 for both
pads: $35-40